Starting solids and sleep

This guide is general information only and isn't a substitute for medical advice. If you're concerned about your child's health, or they're unwell, please see a doctor.

Somebody will tell you that a bowl of rice cereal will get your baby through the night. It's one of the most persistent pieces of advice going, and it sets a lot of families up for disappointment. Here's what starting solids actually does, and doesn't do, for sleep.

When solids start, and why

Most babies show signs of readiness for solids around six months, though this varies, and Raising Children advises not introducing solids before four months. Signs of readiness include reaching for food, opening their mouth when food is offered, and being able to grab things and bring them to their mouth.

The reason for starting is nutrition and development. By around six months babies need iron-rich solid food, and solids help them learn to eat, experience new tastes and textures, and develop the muscles used for speech. Sleep is not on that list.

Will solids make my baby sleep through?

Probably not, and it is worth saying plainly. Night waking across the first year is normal, and babies wake to feed and for comfort. Starting solids earlier than recommended in the hope of longer sleep is not supported by the feeding guidance, and can mean a baby is not developmentally ready for food.

If your baby is waking overnight, the more useful questions are usually about how they fall asleep, whether the day's timing works, and whether they are getting enough milk overall.

How solids can disrupt sleep, briefly

There's a practical timing point as well: start new foods earlier in the day rather than at dinner, so that if a food does upset your baby you find out at 4pm rather than at midnight. And if you have any reason to suspect a food allergy or intolerance, that is a GP conversation, not a sleep one.

• New foods and a new routine can unsettle things for a week or two while everyone adjusts.
• Some babies temporarily take less milk as solids ramp up, then wake hungrier. Keep milk feeds up alongside solids in the early months of eating.
• Sitting up, self-feeding and general excitement all add stimulation to the day.

Keep sleep safe while you're at it

Whatever changes in the day, the sleep rules don't: back to sleep, in their own safe sleep space, in a clear cot. If you have any concerns about your baby's feeding, growth or weight gain, talk to your GP or child and family health nurse before changing feeds around sleep.

Sources

• Raising Children Network, Introducing solids
• Raising Children Network, Baby sleep 2 to 12 months
• Red Nose Australia, Six safe sleep recommendations

Last updated: July 2026. Sources include Red Nose Australia and Raising Children Network where cited above. This guide is general information only. For individual concerns, see your GP or child health nurse.